At 870°F, the stack gas produced by coal combustion contains 10% CO2, 1.2 percent CO, and 8.7 percent O2. The air delivered to the boiler is saturated with water vapor and enters at a temperature of 70 degrees Fahrenheit. Assume a 745 mmHg barometric pressure. a. You'll need to know the ratio of net H to carbon in the coal, as well as the final analysis of the coal, to finish your boiler report. The coal comprises 73 percent carbon, 5.2 percent moisture, and 10% ash, according to preliminary statistics. Assume that there is no nitrogen or sulfur in the water. b. In the boiler, how much extra air is supplied? In addition, a valve controls the amount of air that enters the boiler; how much air is required in ft3/lb of coal? c. How many ft3 of stack gas is produced in one day if the boiler uses 50 tons of coal? Assume a base of 100 lbmols of stack gas.
At 870°F, the stack gas produced by coal combustion contains 10% CO2, 1.2 percent CO, and 8.7 percent O2. The air delivered to the boiler is saturated with water vapor and enters at a temperature of 70 degrees Fahrenheit. Assume a 745 mmHg barometric pressure. a. You'll need to know the ratio of net H to carbon in the coal, as well as the final analysis of the coal, to finish your boiler report. The coal comprises 73 percent carbon, 5.2 percent moisture, and 10% ash, according to preliminary statistics. Assume that there is no nitrogen or sulfur in the water. b. In the boiler, how much extra air is supplied? In addition, a valve controls the amount of air that enters the boiler; how much air is required in ft3/lb of coal? c. How many ft3 of stack gas is produced in one day if the boiler uses 50 tons of coal? Assume a base of 100 lbmols of stack gas.
Introduction to Chemical Engineering Thermodynamics
8th Edition
ISBN:9781259696527
Author:J.M. Smith Termodinamica en ingenieria quimica, Hendrick C Van Ness, Michael Abbott, Mark Swihart
Publisher:J.M. Smith Termodinamica en ingenieria quimica, Hendrick C Van Ness, Michael Abbott, Mark Swihart
Chapter1: Introduction
Section: Chapter Questions
Problem 1.1P
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At 870°F, the stack gas produced by coal combustion contains 10% CO2, 1.2 percent CO, and 8.7 percent O2. The air delivered to the boiler is saturated with water vapor and enters at a temperature of 70 degrees Fahrenheit. Assume a 745 mmHg barometric pressure.
a. You'll need to know the ratio of net H to carbon in the coal, as well as the final analysis of the coal, to finish your boiler report. The coal comprises 73 percent carbon, 5.2 percent moisture, and 10% ash, according to preliminary statistics.
Assume that there is no nitrogen or sulfur in the water.
b. In the boiler, how much extra air is supplied? In addition, a valve controls the amount of air that enters the boiler; how much air is required in ft3/lb of coal?
c. How many ft3 of stack gas is produced in one day if the boiler uses 50 tons of coal?
Assume a base of 100 lbmols of stack gas.
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